Lock-bolt.



m 9 9 r p, A d e t n vBu t a DI R H 0 08 GK .6 F0 .|L E 2 9 7 6 n N(Application filed Jag. 2, 1901.)

(No Model.)

IN vEA m? A TTOHNEYS WITNESSES UNITED STATES PATENT OFFICE.

' EDWIN FREDERICK COMBER, OF SELKIRK, CANADA.

LOCK-BOLT.

SPECIFICATION forming part of Letters Patent No. 671,792, dated April 9,1901. Application filed January 2, 1901. Serial No. 41,869. (No model.)

To otZZ whom it may concern:

Be it known that I, EDWIN FREDERICK COMBER, a subject of the Queen ofGreat Britain, and a resident of Selkirk, in the Province of Manitobaand Dominion of Canada, have invented a new and Improved Lock- Bolt, ofwhich the following is a full, clear, and exact description.

This invention relates to improvements in bolts for door-locks; and theobjectis to provide a bolt that is lengthwise adjustable, so that underall conditions it will sufiiciently clutch the hasp or bolt catch, suchadjustment permitting of the bolt being made to engage securely withthis hasp or catch in case of shrinkage of doors or frames withoutnecessitating a resetting ofa lock or its hasp.

I will describe a lock-bolt embodying my invention and then point outthe novel features in the appended claim.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in both the views.

Figure 1 is a longitudinal section of a bolt embodying my invent-ion,and Fig. 2 is alongitudinal section at right angles to Fig. 1.

The bolt comprises an inner section 1, designed to be engaged with alock mechanism in the usual manner, and an outer section 2, adjustabletoward or from the end of the inner section. This outer section 2 iscurved at its outer end in the usual manner, and extended longitudinallythrough the same is the shank portion 3 of a screw 4, the thread ofwhich engages in the threaded longitudinal opening 5 of the innersection 1 of the bolt.

The screw is prevented from longitudinal movement in relation to theportion 2 of the bolt by means of a collar 6, secured to the shankportion of the bolt and engaging in a recess at the inner end of thebolt portion 2, while the outer end of said shank 3 is provided with ahead 7 which engages in a recess at the outer end of said section 2 ofthe bolt. The said head F is provided with a slot or kerf to receive ascrew-driver for the purpose of turning the adjusting-screw.

The section 2 of the bolt is prevented from rotating relatively to thesection 1 by means of guide-pins. These guide-pins 8 are here shown asconnected by the section 1 of the bolt and extended into longitudinalopenings in the section 2 of the bolt, these pins being placed atopposite sides of the adj Listing-screw or bolt.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent A lock-bolt, comprising two sections, anadjusting-screw mounted to turn in one section and having its threadengaging with the other section, and guide-pins extended from one of thesections and loosely engaging in openings in the other section,substantially as specified.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

M EDWIN FREDERICK COMBER.

Witnesses:

ROBT. BULLOCK, CHARLES R. LITTLE.

